Eyeglasses & Sunglasses with Single Vision Lenses

About forty-two percent of Americans have a nearsightedness problem. If you are one of these forty-two percent of Americans, then you need single-vision glasses to correct your vision. On the other hand, people with distance problems will need to choose lenses that have a negative prescription and they also need to use a pair with concave lenses to correct their vision. For reading, it is necessary to choose lenses that are about thirty to forty centimeters thick and the lenses need to be convex in shape. Lenses that correct your reading problems are suitable for most people but if you have unique eye problems then you may need to choose a pair that corrects both your near and farsightedness problems. In such a case, you need to choose between bifocal and multifocal lenses.

Once you have chosen the lenses, you then need to check the different kinds of lens coatings that can give your lenses the right attributes. Different coatings suit different conditions. So, choose them wisely. You can go with lens coatings that change colors depending on the lighting conditions while other coatings protect from scratches or even from the harsh rays of the sun. The anti-scratch coating will offer good protection for your lenses against scratches and abrasions and will protect your lenses from everyday usage.
The anti-reflective coating is designed to help you get rid of the annoying glare and halos as well as reflections that are caused by computers and lights. This lens coating suits those who are wearing glasses with high-index lenses.

The lens index refers to a number that indicates the efficiency with which the lens material bends light. A pair with a high refractive index will not allow light to enter quickly and will bend more light. Also, high index numbers mean that the lenses can handle high prescriptions better. 1.5 index means that the lenses are of a standard type and are the best option for those with weak prescriptions. 1.57 index on the other hand means that the lenses are better than standard lenses and are great for people with prescriptions of between +/- 5 and +/- 4.00. 1.67 index lenses are very light and will not cause vision distortion even if you have a high prescription. The thinnest lenses are those with an index of 1.74. They are perfect for people with prescriptions of +/- 9.25 and above.

If you suffer from myopia or hyperopia or astigmatism, then single-vision glasses are the right option for you. They are also perfect for people that suffer from either nearsightedness or farsightedness and who need to correct their vision with just one power. If you are under forty years of age, and you have a single vision problem, then you should choose single-vision glasses to see clearly at a particular distance. Even those who are above the age of forty can wear single-vision eyewear to correct their visions. This kind of eyewear is used to correct a single-vision problems such as nearsightedness or farsightedness or astigmatism. Such glasses have the same prescription throughout the lenses.

Some people prefer progressive glasses over single-vision glasses because it allows them to see clearly at multiple distances. Progressive lenses can do the job of single-vision eyewear and so, you only need to own one pair to correct multiple vision problems. If you want to switch between progressives and single-vision eyewear or vice versa, you must allow some time to get used to your new glasses. Single-vision glasses are glasses that have just one prescription throughout the lenses. Thus, they can only correct a single-vision problem. So, they can either help you see better at close-up distances or they can help you see clearly at far distances but they cannot help you see clearly at both near and far distances.

The former will correct just one vision problem while the latter is designed to correct two vision problems in just one pair of glasses. The latter has two focal areas and can correct both near and farsightedness whereas single-vision glasses can only fix either near or far distance viewing problems.

The best place to buy your single-vision glasses is from a reputable online store like the one called GlassesPeople.COM. Here, you can pick and choose from a wide selection of glasses and buy them at the most affordable prices.